<div class="bny-card">
    <div class="bny-card-header">
        折叠面板
    </div>
    <div class="bny-card-body">
        <div class="bny-panel">
            <details>
                <summary class="icon">折叠面板标题1</summary>
                <div class="bny-panel-body">
                    我是折叠面板内容1
                </div>
            </details>
            <details>
                <summary class="icon">折叠面板标题2</summary>
                <div class="bny-panel-body">
                    我是折叠面板内容2
                </div>
            </details>
            <details>
                <summary class="icon">折叠面板标题3</summary>
                <div class="bny-panel-body">
                    我是折叠面板内容3
                </div>
            </details>
            <details>
                <summary class="icon">折叠面板标题4</summary>
                <div class="bny-panel-body">
                    我是折叠面板内容4
                </div>
            </details>
        </div>
    </div>
</div>